Now showing items 211-215 of 215
A Signal-Dependent Time-Frequency Representation: Fast Algorithm for Optimal Kernel Design
A time-frequency representation based on an optimal, signal-dependent kernel has been proposed recetnly in an attempte to overcome one of the primary limitations of bilinear time-frequency distributions: that the best ...
Improved Time-Frequency Filtering of Signal-Averaged Electrocardiograms
A recently proposed time-frequency filtering technique has shown promising results for the enhancement of signal-averaged electrocardiograms. This method weights the short-time Fourier transform (STFT) of the ensemble-averaged ...
Multiscale modeling and estimation of Poisson processes with application to photon-limited imaging
Many important problems in engineering and science are well-modeled by Poisson processes. In many applications it is of great interest to accurately estimate the intensities underlying observed Poisson data. In particular, ...
Improved Wavelet Denoising via Empirical Wiener Filtering
Wavelet shrinkage is a signal estimation technique that exploits the remarkable abilities of the wavelet transform for signal compression. Wavelet shrinkage using thresholding is asymptotically optimal in a minimax ...
Tensor Product Basis Approximations for Volterra Filters
This paper studies approximations for a class of nonlinear filters known as Volterra filters. Although the Volterra filter provides a relatively simple and general representation for nonlinear filtering, often it is highly ...